I tried to make a autoComplete textbox like google Search with C# in a WPF application, basically what I want to do is have a autocomplete textbox which is bound to a sql database table. the table has 2 fields(Barcode and Name),my code as below:
In XMAL :
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="37*" />
<RowDefinition Height="88*" />
</Grid.RowDefinitions>
<TextBlock Text="Type Your Search :" HorizontalAlignment="Left" VerticalAlignment="Bottom" Width="112" Height="15.96" Margin="31,0,0,4" />
<TextBox HorizontalAlignment="Right" VerticalAlignment="Bottom" Height="25" Width="325" Margin="0,0,10,0" x:Name="txtCAuto" TextWrapping="NoWrap" />
<ListBox x:Name="lbSuggestion" SelectionChanged="lbSuggestion_SelectionChanged" Background="LightYellow" Grid.Row="1" Visibility="Collapsed" HorizontalAlignment="Right" VerticalAlignment="Top" Width="325" Margin="0,0,10,0"/>
</Grid>
Code Behind:
List<string> nameList;
List<Product> prodList;
public List<string> SelProd4Sale(string str )
{
string constr = "Data Source=.;Initial Catalog=AgamistaStore;User ID=emad2012;Password=emad_2012";
SqlConnection SqlCon = new SqlConnection(constr);
SqlCommand SqlCmdProds = new SqlCommand();
SqlCmdProds.Connection = SqlCon;
SqlCmdProds.CommandType = CommandType.Text;
SqlCmdProds.CommandText = "SELECT dbo.ProductsTbl.ProductID,ProductsTbl.ProductBarcode," +
"dbo.ProductsTbl.ProductName, dbo.ProductsTbl.SalePrice FROM dbo.ProductsTbl ";
SqlCon.Open();
SqlDataAdapter dapProds = new SqlDataAdapter();
dapProds.SelectCommand = SqlCmdProds;
DataSet dsProds = new DataSet();
dapProds.Fill(dsProds);
SqlCon.Close();
prodList = new List<Product>();
for (int i = 0; i < dsProds.Tables[0].Rows.Count; i++)
prodList.Add(new Product
(dsProds.Tables[0].Rows[i]["ProductBarcode"].ToString(),
dsProds.Tables[0].Rows[i]["ProductName"].ToString());
}
dsProds = null;
nameList = new List<string>()
prodList.ToString()
};
return nameList;
public Window2()
InitializeComponent();
SelProd4Sale(txtCAuto.Text);
txtCAuto.TextChanged += new TextChangedEventHandler(txtAuto_TextChanged);
#region TextBox-TextChanged-txtAuto
private void txtAuto_TextChanged(object sender, TextChangedEventArgs e)
string typedString = txtCAuto.Text.ToUpper();
List<string> autoList = new List<string>();
autoList.Clear();
foreach (string item in nameList)
if (!string.IsNullOrEmpty(txtCAuto.Text))
if (item.StartsWith(typedString))
autoList.Add(item);
if (autoList.Count > 0)
lbSuggestion.ItemsSource = autoList;
lbSuggestion.Visibility = Visibility.Visible;
else if (txtCAuto.Text.Equals(""))
lbSuggestion.Visibility = Visibility.Collapsed;
lbSuggestion.ItemsSource = null;
else
#endregion
#region ListBox-SelectionChanged-lbSuggestion
private void lbSuggestion_SelectionChanged(object sender, SelectionChangedEventArgs e)
if (lbSuggestion.ItemsSource != null)
txtCAuto.TextChanged -= new TextChangedEventHandler(txtAuto_TextChanged);
if (lbSuggestion.SelectedIndex != -1)
txtCAuto.Text = lbSuggestion.SelectedItem.ToString();
class Product
private string _ProductBarcode = "";
private string _ProductName = "";
public Product(string prodName,string prodBarcode)
this._ProductBarcode = prodBarcode;
this._ProductName = prodName;
public string ProductBarcode
get { return _ProductBarcode; }
set { _ProductBarcode = value; }
public string ProductName
get { return _ProductName; }
set { _ProductName = value; }
When I run this I got "System.Collections.Generic.List" as result instead of data.
Can somebody help me please & tell me what 's wrong?
Thanks.